<template>
    <div>
        <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
<el-row>
    <el-col>
        <el-button type="primary">添加角色</el-button>
    </el-col>
</el-row>

<el-table :data="rolesList" border stripe>
    <el-table-column type="expand">
        <template slot-scope="scope">
           <el-row :class="['bdbottom',i1===0?'bdtop':'','vcenter']"  v-for="(item1,i1) in scope.row.children" :key="item1.id">
               <el-col :span="3">
                   <el-tag closable @close="removeRightById(scope.row, item1.id)">{{item1.authName}}</el-tag>
                   <i class="el-icon-caret-right"></i>
               </el-col>
               <el-col :span="21">
                   <el-row :class="[i2===0?'':'bdtop','vcenter']" v-for="(item2,i2) in item1.children" :key="item2.id">
                       <el-col :span="3">
                    <el-tag closable @close="removeRightById(scope.row, item2.id)" type="success">{{item2.authName}}</el-tag>
                   <i class="el-icon-caret-right"></i>
                       </el-col>
                         <el-col :span="21">
                            <el-tag closable @close="removeRightById(scope.row, item3.id)" v-for="(item3) in item2.children" :key="item3.id" type="warning">{{item3.authName}}</el-tag>
                       </el-col>
                   </el-row>
               </el-col>
           </el-row>
        </template>
        </el-table-column>     
    <el-table-column type="index" label="#"></el-table-column>
    <el-table-column label="角色名称" prop="roleName"></el-table-column>
    <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
    <el-table-column label="操作">
        <template slot-scope="scope">
            <el-button size="mini" type="primary" icon="el-icon-edit">编辑</el-button>
            <el-button size="mini" type="danger" icon="el-icon-delete">删除</el-button>
            <el-button size="mini" type="warning" icon="el-icon-setting" @click="showSetRightDialog(scope.row)">分配权限</el-button>
        </template>
    </el-table-column>
</el-table>
    </el-card>

<el-dialog
  title="权限分配"
  :visible.sync="setRightDialogVisible"
  width="50%"
  @close="setRightDialogClosed"
  >
  <el-tree :data="rightslist" :props="treeprops" show-checkbox node-key="id" default-expand-all :default-checked-keys="defKeys" ref="treeRef" ></el-tree>
  <span slot="footer" class="dialog-footer">
    <el-button @click="setRightDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="allotRights">确 定</el-button>
  </span>
</el-dialog>

    </div>
</template>
<script>
export default {
    data:function(){
        return{
            rolesList:[],
            setRightDialogVisible:false,
            rightslist:[],
            treeprops:{
                children:'children',
                label:'authName'
            },
            defKeys:[],
            roleId:''
        }
    },
    created:function(){
        this.getRolesList()
    },
    methods:{
        getRolesList:async function(){
          const{data:res}=await  this.$http.get('roles')
          if(res.meta.status!==200) return this.$message.error('获取角色列表失败')
          this.rolesList=res.data
        },
        removeRightById:async function(role,rightId){
         const confirmResult = await this.$confirm('此操作将永久删除该权限, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err=>err)
        if(confirmResult!=='confirm')return this.$message.info("已取消了删除")
        const{data:res} = await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
        if(res.meta.status!==200){
            return this.$message.error('删除失败！')
        }
        role.children=res.data
        },
        showSetRightDialog:async function(role){
            this.roleId=role.id
            const{data:res}= await this.$http.get('rights/tree')
            if(res.meta.status!==200)
            {
                return this.$message.error('获取权限数据失败')
            }
            this.rightslist=res.data
            this.getLeafKeys(role,this.defKeys)
            
            this.setRightDialogVisible=true

        },
        getLeafKeys:function(node,array){
            if(!node.children)
            {
               return array.push(node.id)
            }
            node.children.forEach(item => {
                this.getLeafKeys(item,array)
            });
        },
        setRightDialogClosed:function()
        {
            this.defKeys=[]
        },
        allotRights:async function(){
            const keys=[
                ...this.$refs.treeRef.getCheckedKeys(),
                ...this.$refs.treeRef.getHalfCheckedKeys()
            ]
            const str=keys.join(',')
          const{ data:res } = await this.$http.post(`roles/${this.roleId}/rights`,{rids:str})
          if(res.meta.status!==200)
          {
              this.$message.error('权限分配失败')
          }
          this.$message.success('分配成功')
          this.getRolesList()
          this.setRightDialogVisible=false
        }

    }
}
</script>
<style lang="less" scoped>
.el-tag{
    margin: 7px;
}
.bdtop{
    border-top: 1px solid #eee;
}
.bdbottom{
    border-bottom: 1px solid #eee;
}
.vcenter{
    display: flex;
    align-items: center;
}
</style>